The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor. Equal to Greater than Smaller than Unpredictable from the data TRUE ANSWER : ? YOUR ANSWER : ?
The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the Collision frequency increases Fraction of molecules having threshold energy increases Increased temperature reduces the activation energy Value of threshold energy decreases TRUE ANSWER : ? YOUR ANSWER : ?
Slurry reactors are characterised by the Presence of two mobile phases Neither A nor B Lack of intraparticle diffusion resistance Both A and B TRUE ANSWER : ? YOUR ANSWER : ?
For a zero order reaction, the concentration of product increases with the Increase of reaction time Increase in initial concentration Decrease in total pressure Total pressure TRUE ANSWER : ? YOUR ANSWER : ?
Collision theory gives the rate constant for bimolecular reaction as K α eE/RT K α e-E/RT None of these K α √T.e-E/RT TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following will favour the reverse reaction in a chemical equilibrium reaction? Removal of at least one of the products at regular interval Increasing the concentration of one of the reactants Increasing the concentration of one or more of the products None of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following chemical reactions will be favoured by low pressure ? N₂O₂ ⇋ 2NO₂ None of these 2HI ⇋ H₂ + I₂ N₂ + O₂ ⇋ 2NO TRUE ANSWER : ? YOUR ANSWER : ?
If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle) Changes unpredictably Remains unaltered Decreases Increases TRUE ANSWER : ? YOUR ANSWER : ?
A photochemical reaction is __________ light. Accompanied with emission of Initiated by Catalysed by Used to convert heat energy into TRUE ANSWER : ? YOUR ANSWER : ?
If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is One Zero Three Two TRUE ANSWER : ? YOUR ANSWER : ?